Kensington Palace announced the news on Twitter and the @SussexRoyal account already has over 190 followers – and counting.

Meghan and Harry’s first post includes a gallery of nine photos from their charity work and their royal tour of the South Pacific last October. It includes what is thought to be a previously unseen black and white image of the pair with their backs to the camera, as they stand on the balcony of the Grand Pacific Hotel in Fiji.

Harry and Meghan during their tour of Fiji last October [Photo: Getty]

The caption reads: “Welcome to our official Instagram; we look forward to sharing the work that drives us, the causes we support, important announcements, and the opportunity to shine a light on key issues. We thank you for your support, and welcome you to @sussexroyal.”

Their first post alone, has already attracted over 60k likes, including one from Meghan’s best friend Jessica Mulroney.

The new social media platform has been set up just in time for the arrival of the Sussexes’ first child, expected at the end of April.

The couple are set to move to their new home at Frogmore Cottage in Windsor ahead of the birth, although there have reportedly been delays to the renovations of the Grade II-listed property.

Last month it was announced that Meghan and Harry have created their own royal household, which will be based at Buckingham Palace.

The couple have hired Hillary Clinton’s former advisor, Sara Latham, to head up communications. Ms Latham will report directly to The Queen’s Communication Secretary, Donal McCabe.

The Duke and Duchess of Cambridge’s office will continue to be based at Kensington Palace. Jason Knauf has been appointed as Senior Adviser to the Duke and Duchess of Cambridge. He was previously Communications Secretary for the Cambridges and Prince Harry’s office.